Ancestry.com Inc.’s (ACOM) shares gained 30 percent to $41.85 at the start of trading Friday, the most intraday since November 2009. The online provider of family histories late Thursday reported strong bottom- and top-line growth. Ancestry’s Q1 profit more than doubled to $9 million, or 18 cents a share, vs the average analyst estimate of 15 cents a share. Volume has exploded with nearly 5 million shares already trading hands compared to a 3-month daily average volume of just 589,000. Day’s range: $36.00 – $41.85.

Cerner Corp.’s (CERN) shares advanced 11% after the health-information technology company late Thursday reported better-than-expected quarterly profit. First quarter revenue came in at $491.7 million, up 14% compared to $431.3 million in the year-ago period. Excluding items, Cerner earned $0.80 a share vs $0.76 estimates. The co. said it currently expects 2011 adjusted diluted earnings of $3.55 to $3.62 a share, on sales of $2.07 to $2.12 billion, up from a prior range of $3.50 to $3.60 a share, on revenue of $2.05 to $2.1 billion. Shares of the North Kansas City, Missouri – based Cerner closed at $112.09 on Thursday on Nasdaq. At last check, CERN was up $10.92, or 9.74%, to $123.24. Volume: 1.9 million shares traded as of 12:45 p.m. EST vs 588,000 daily (3m) average.

Netgear Inc.’s (NTGR) shares were up more than 26% recently, to $43.05, the highest intraday price since the co.’s July 2003 initial public offering. The maker of modern routers and other wireless products reported better-than-expected Q1 results and forecast Q2 sales to be at least $270 million, topping the $241 million consensus. For the first quarter, Netgear said it earned $21.2 million, or $0.57 a share, up from $0.38 a share, y/y. Volume has exploded with nearly 3 million shares already trading hands compared to a 3-month daily average volume of just 385,000 shares. Day’s range: $39.79 – $43.67. NTGR closed at $34.00 on Thursday on Nasdaq.

SunPower Corp. (SPWRA) surged 37 percent to $22.05, the highest intraday PPS since January 2010. The French oil giant Total SA (TOT), Europe’s third-biggest oil producer, announced late Thursday that it was planning to buy a majority stake in U.S. solar energy firm at a price of $23.25 a share, which is a premium of almost 50% over the security’s prior session closing price ($16.12). TOT said it will pay $1.38 billion to acquire a 60% stake in SunPower Corp in a bid to increase its exposure to the solar industry. Kaufman and Wedbush upped their price target on shares of SPWRA to $23.50 from $17 and to $20 from $11, respectively. Both firms view this deal as very positive for SunPower. Volume has exploded with nearly14 million shares already trading hands compared to a 3-month daily average volume of 3.8 million shares.

Skyworks Solutions Inc. (SWKS) rallied 14 percent after the wireless semiconductor company reported Q2 earnings of $0.41 per share, $0.02 better than the Thomson Reuters consensus of $0.39. The company also issued upside guidance for Q3, saying it currently sees EPS of $0.46, excluding non-recurring items, versus $0.43 consensus. Today’s trading range for shares of SWKS has been between $29.70 – $31.95. Ticker closed at $27.51 on Thursday on Nasdaq. Volume: 8 million vs daily average of 4.9 million.